Seat-mount.



E. KAUFMANN & R. J. HOLT.-

SEAT MOUNT.

APPLICATION FILED FEB. 3. 19l3. RENEWED AUG. 2.1915.

1 1 52, 1 O2. Patented Aug. 31, 1915.

WITNESSES INVENTORS jma'izzle? K226 71247272,

I Zolef THZZZ,

777. 3y Attorney COLUMBIA PLANOGRAPM c0.. \vAsmNu'roN. n. r

Warren sra rns P ENT orrrcn EMANUEL KAUFMANN A D ROBERT- n w. or ATLANTA, GEORGIA; SA D H LT ASSIGNOB o SAID, KAUFMANN- SEAT-MOUNT.

Specification of Letters Patent. t nt 31, 1 1

Application filed February 3, 1918, Serial No. 745,942. Renewed August 2, 1915. Serial No. 9 3,348.

To all who-m it may concern: 7 Be it known that we, EMANUEL KAUF- MANN and ROBERT J. HoL'r, citizens of the United States, and residing at Atlanta, in the county of Fulton and State of Georgia,

limited pivotal movement of the seat on its support, but which will also act to retain the seat against removal; and to provide a construction which will be simple and efficient in operation, durable in construction, readily applied, and which can be manufac tured at a relatively low cost.

To these and other ends, the nature of which will be readily understood as the invention is hereinafter disclosed, said invention consists in the improved construction and combination of parts hereinafter fully described, illustrated in the accompanying drawings, and more particularly pointed out in the appended claims.

In the accompanying drawings, in which similar reference characters indicate similar parts in each of the views, Figure 1 is a ver tical sectional view taken through the pivot of the seat and the supporting arm, showing an application of our invention. Fig. 2 is a sectional view of the same taken on the line ':22 of Fig. 1. Fig. 3 is a sectional View taken on the line 3'3 of Fig. 1. Fig. l is a detail view of one of the members.

The present invention is more particularly adapted for use in connection with a support of the arm type, although the same may be employed in connection with supports of the pedestal type. In the drawings, however, we have shown it as applied to the outer end of an arm, indicated at 10, said arm being supported in suitable manner, and having its outer end provided with an opening 10 and with a face 10 substantially concentric with the opening 10*, said face 10 being less than a circle and greater than a half-circle, being formed at the end of the arm 10. i

11 designates a member which may be in the form of a plate adapted to be secured to the under surface of the seat and having a depending pintle 11 adapted to rotatively fit within the opening 10 The pintle may be formed integral with or separate from said plate, eitherarrangement falling within the scope of the invention. The plate 11, is provided with a face 11 which is adapted to be seated upon the upper face of the end of the arm, said upperface being the upper face of an annular flange 1O positioned above the face lO", the under face of said flange forming a shoulder 10 The member 11 is'secured to the chair in any suitable manner asfor instance by screws.

12 designates a member which ispreferably in spider form, as shown in Fig. l, the arms of the spider being adapted to be secured to the bottom of the chair seat. The arms, of the spider, ;indicated at l2 -are joined to a bearing member 12 which has its inner face 12 adapted to fit the face 10 said face 12 however, being of less peripheral length than the similar length of the face 10", but, however being preferably of a greater length than a half-circle, this latter being preferred by reason jof'the fact that the hearing will have a deterrent effect on anv tendency of the seat to cant and strain the pintle 11; however, said bearing may have alength less than a half-circle,

and-while such structure would not be as eflicient as the preferred form, it would act to retain the seat against removal.

,As will be seen more especially by Fig. 3, the difierence in facial length of the faces 10*? and 12 provides for a certain amount of play between the spider and the arm 10, and as, the pintle restricts swinging movement of the'seat to those made pivotal, it, will; be understood that the seat,

while pivotally-mounted, has its movements restricted throughthe contact of the ends of the bearing 12 with the arm.

hen the parts are assemble l, itwill be seen that the bearing 12 is normally-positioned to extend below the flange 10, thus providing an abutment which will prevent the seat from being raised excepting where the distance between the face 11 and the upper face of the bearing 12 is greater than the thickness of the flange 10, in which case there would be a play equal tothe difierence in such size, but in any event, the structure would be such as to prevent the seat from being taken out of its support, the removal being permitted only through removing the securing means of the spider and seat. As will be readily understood, this construction renders the seat especially valuable as a deterrent against removal of the seat from its support and of a free pivotal action, the latter feature being of importance especially where the seat is mounted on an arm, since a proper positioningof the spider on the seat will prevent a swinging of the seat to'such a position where the occupant would be liable to injure himself through contact with the arm. This arrangement is also of value in connection with seats adapted for school children, since there is permitted a suflicient pivotal movement to permit changes in position in the seat, but insuflicient to permit the child to swing freely and materially change its general position. v

The present invention is especially adapted to be used in connection with the general structure shown in ourcompanion application filed February 3, 1913, Serial #745,94 0, in which the arm is adapted to spirit and scope of the invention as expressed in the accompanying claims.

Having thus described our invention, what we claim as new is:

1. Seat supporting means comprising a supporting member having an opening and formed with a face concentric with said opening and of a peripheral length less than a circle but greater than a half circle, and having a flange overhanging said face, a seat, a plate member secured to the bottom of said seat and carrying a pin adapted to project into said opening, said plate having a face riding in contact with the top of said flange, said flanged portion form- Copies of this patent may be obtained for ing a support for the seat, and a spider member also carried by the seat and having a bearing provided with a face complemental to said member face, the peripheral length of said spider member face being sufliciently shorter than that of the member face as to permit the seat to swing pivotally within restricted distances, said spider member face being located beneath said member flange, whereby said flange will be interposed between the two elements carried by the seat and act additionally to prevent accidental withdrawal of the pin from saidopening, the ends of said spider face being adapted to contact with the sides.

of said supporting member.

2. Seat supporting means comprising a supporting member having an opening and formed with a face concentric with said opening and of a peripheral length less than a circle but greater than a half circle, and having a flange overhanging said face, a seat, a plate member secured to the bottom of said seat and carrying a pin adapted to project into said opening, said plate having a face riding in contact with the top of said flange, said flanged portion. forming a support for the seat, and a spider member also carried by the seat and having a bearing fitting said opening provided with a face complemental to said, member face,

the length of said spider member face being sufficiently shorter than that of the member face as to permit the seat to swing pivotally within restricted distances, said spider member face being located beneath said member flange, whereby said flange will be interposed between the two elements carried by the seat and act additionally to prevent accidental withdrawal of the pin from said opening, said supporting member and the spider member having complemental means to limit the free pivotal movement of the seat on the supporting member, said means being in the form of abutments.

In testimony whereof we affix our signatures in presence of two witnesses.

EMANUEL KAUFMANN. ROBERT J. HOLT. Witnesses:

HUGH A. Mosns, D. H. DOUGHERTY, Jr.

five cents each, by addressing the Commissioner of Patents, Washington, D. C. i 

